Is 4845 is a composite number or not?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 4845 is composite or not first we have to find its factors.
Contents
Factors of 4845:
- If we have taken numbers from 1, 2, 3…for checking factors of 4845, we found that 4845 has factors 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845. Hence, we must say that 4845 is a composite number.
- Thus, 4845 is the composite number.
- If we multiply 4845 by 1, 2, 3 then we get the multiples of 4845 which are 4845, 9690 and so on.
4845 is a Composite number or Prime number
About the number 4845:
- 4845 has more than two factors which 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845 are hence it is the composite number.
- 4845 is the odd composite number and it is not the perfect square also.
- If we divide 4845 by 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845 then we get remainder as zero. Hence 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845 are the factors of 4845.
Note:
- 4845 is not the perfect square.
- Factors of 4845:1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845
- Prime factors of 4845:3, 5, 17, 19
Conclusion:
- 4845 is the composite number which has factors 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845.
- And hence, 4845 is not the prime number.
Multiple Choice Questions:
1) 4845 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 4845 are
a) 1
b) 3, 5, 17, 19
c) 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845
d) 1, 15, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845
Ans: b) 3, 5, 17, 19
3) 4845 is the composite number because
a) It has factors 1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615 and 4845
b) It has more than two factors
c) It is not divisible by 2
d) Both a and b
Ans: d) both a and b
Why the below numbers are composite numbers
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